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E39 540i heater is stuck at the foot level and blowing "magma" temperature air.

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    E39 540i heater is stuck at the foot level and blowing "magma" temperature air.

    My brother took my 2001 540i to the gym and when coming back this happened: The center console climate control is completely off or un-illuminated and unresponsive, and the heater is blowing at hurricane urgency solely to the footwells with a temperature not dissimilar to "center of the earth scorching" intensity. Even when the car is off, with the key completely out of the ignition, but the battery is connected, it blows (literally and figuratively). I had to stop it by disconnecting the battery. I have heard of this problem in newer cars but dont remember the possible causes. Furthermore, Matt (MR325) is there any way this can be remedied either at this house, or taking it to TNG Specialties anytime soon if it is not an easy fix? Thank you for your input, fellas.

    Mariano


    2001 Titaniumsilber 540i Sport 6-Speed
    1990 Diamantschwarz Alpha-N 2.5L ///M3
    1986 Alpinweiss 325e M50B25 (R.I.P.)

    -Talk to me when more sound comes from the induction than from the exhaust...

    -Argentina........lo mas grande que hay.


    #2
    thats a weird one!
    www.tylercoey.com - www.donewhenimdead.com

    E36/8 ///M coupe - E36 ///M3 sedan - E30 ///M powered

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      #3
      Indeed and very frustrating. One of those "I dont know who to be mad at, so Ill unjustifiably and inexplicably be mad at the person driving it even though it clearly wasnt his fault" kind of situations. hahaha.


      2001 Titaniumsilber 540i Sport 6-Speed
      1990 Diamantschwarz Alpha-N 2.5L ///M3
      1986 Alpinweiss 325e M50B25 (R.I.P.)

      -Talk to me when more sound comes from the induction than from the exhaust...

      -Argentina........lo mas grande que hay.

      Comment


        #4
        I haven't heard of it staying on, but it's common in E39s for the blower to have a mind of it's own. When mine went, it just stopped completely.

        The fix is easy though, swap out the control unit: http://www.bimmerfest.com/forums/sho...d.php?t=143393
        Chris
        90 Corrado/91 M3/01 M5

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          #5
          I lol'd at the title, and was crying halfway through the thread.
          -03/2005 E46 330D Touring 6spd(204hp/410nM) Sapphire Black/Naturbraun Sport...300k KM & 35mpg(mixed)

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            #6
            Haha thanks. :) And thanks for the responses, fellas!


            2001 Titaniumsilber 540i Sport 6-Speed
            1990 Diamantschwarz Alpha-N 2.5L ///M3
            1986 Alpinweiss 325e M50B25 (R.I.P.)

            -Talk to me when more sound comes from the induction than from the exhaust...

            -Argentina........lo mas grande que hay.

            Comment


              #7
              It's an E39 thing.
              Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



              OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

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                #8
                As soon as I read "magma" I switched to Dr. Evil.
                Need parts now? Need them cheap? steve@blunttech.com
                Chief Sales Officer, Midwest Division—Blunt Tech Industries

                www.gutenparts.com
                One stop shopping for NEW, USED and EURO PARTS!

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                  #9
                  Wow, my 540i once decided to blow steaming hot air out of the panel vents, but it went away by itself after letting it sit a day :|


                  Originally posted by Jean View Post
                  It's an E39 thing.
                  +1
                  Last edited by Ryan...; 06-24-2011, 07:04 AM.
                  2007 Range Rover Sport S/C

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                    #10
                    dibs on m62
                    91 318is

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                      #11
                      crazy!

                      somewhat off topic, but my wife hates my car. Like, really really hates it. But once during this winter we went out to dinner, and we took my car for whatever reason. And being a girl, she's always cold, especially in the winter - she said "you know, one thing about this car, is the heater works right away". haha. :)
                      Build thread

                      Bimmerlabs

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                        #12
                        mines on the way out, mind of its own. e39 electronics FTW

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                          #13
                          Originally posted by z31maniac View Post
                          As soon as I read "magma" I switched to Dr. Evil.


                          LOL
                          IG: deniso_nsi Leave me feedback here

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                            #14
                            Originally posted by nando View Post
                            crazy!

                            somewhat off topic, but my wife hates my car. Like, really really hates it. But once during this winter we went out to dinner, and we took my car for whatever reason. And being that she is a fucking hot ass girl that is also really fucking fit, she's always cold, especially in the winter - she said "you know, one thing about this car, is the heater works right away". haha. :)
                            fixed.

                            relay issue is my guess. one of the unloader relays.
                            AWD > RWD

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                              #15
                              Originally posted by z31maniac View Post
                              As soon as I read "magma" I switched to Dr. Evil.
                              That was the point haha! ;-)
                              Originally posted by Ryan... View Post
                              Wow, my 540i once decided to blow steaming hot air out of the panel vents, but it went away by itself after letting it sit a day :|
                              Ill try that. I havent turned the car on since then.
                              Originally posted by isayyo2 View Post
                              dibs on m62
                              Hey there!
                              Originally posted by nando View Post
                              crazy!

                              somewhat off topic, but my wife hates my car. Like, really really hates it. But once during this winter we went out to dinner, and we took my car for whatever reason. And being a girl, she's always cold, especially in the winter - she said "you know, one thing about this car, is the heater works right away". haha. :)
                              Brool Cory Sto! jk thats cool, man.
                              Originally posted by Kershaw View Post
                              relay issue is my guess. one of the unloader relays.
                              That was one of my guesses. I shall check on it and report back!


                              2001 Titaniumsilber 540i Sport 6-Speed
                              1990 Diamantschwarz Alpha-N 2.5L ///M3
                              1986 Alpinweiss 325e M50B25 (R.I.P.)

                              -Talk to me when more sound comes from the induction than from the exhaust...

                              -Argentina........lo mas grande que hay.

                              Comment

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